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"Transmission of documents via telephone wires is possible in principle, but the apparatus required is so expensive that it will never become a practical proposition."
Dennis Gabor, British physicist
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| Number | Title | Issue Date |
| 7123648 | Radio relay apparatus A radio relay apparatus including an outdoor relay unit formed of first and second receiving parts equipped out of doors and an indoor relay unit formed of third and fourth receiving parts, and a digital transmission line connecting the outdoor and indoor relay unit... | 10/17/2006 |
| 7092434 | Mobile station used as a repeater station when communicating with a base station When a mobile station communicates with a base station by way of one or a plurality of other mobile stations, the mobile station acting as a relay station determines whether the data demodulated after being received is reception data for the mobile station or transf... | 08/15/2006 |
| 7076460 | Interactive remote auction bidding system An interactive remote auction bidding system for conducting an auction utilizes a data input device for communication over a network to the auction site. The system includes a data processor located at the auction site for generating bid information for communicatio... | 07/11/2006 |
| 7069243 | Interactive remote auction bidding system An interactive remote auction bidding system for conducting an auction utilizes a data input device for communication over a network to the auction site. The system includes a data processor located at the auction site for generating bid information for communicatio... | 06/27/2006 |
| 7038817 | Facsimile signal transmission system Disclosed is a FAX signal transmission system, in which the transmission side and the reception side are inter-coupled by a bearer. Each side is constituted by DCME comprising a transmission side, which includes a signal identification circuit 3, a FAX data a... | 05/02/2006 |
| 6980819 | Radio communication system, and apparatus, method, and computer program for said radio communication system A communication system that permits the coexistence of a plurality of ultrawide band (UWB) radio communication networks that use different signal systems is achieved by using the same beacon signal and specifying the format of part of the control command among a plu... | 12/27/2005 |
| 6950670 | Wireless network having joint power and data rate adaptation A wireless network includes transmission power and data rate adaptation based upon signal quality experienced by the user. ... | 09/27/2005 |
| 6931017 | Burst ratio: a measure of bursty loss on packet-based networks A “Burst Ratio” is defined for use as a measure of the burstiness of a packet-based network. One illustrative implementation of the Burst Ratio (R) is where R is equal to the ratio of the average length of observed bursts in a packet arrival sequence over the av... | 08/16/2005 |
| 6907592 | Method of routing in a programmable logic device A method is disclosed to efficiently route in a programmable logic device (PLD) such as a field-programmable gate array (FPGA). The method includes identifying a source and destination pair in a circuit design; determining multiple candidate paths to route a vector ... | 06/14/2005 |
| 6888881 | Repeater A relay station is composed of a main reception antenna 1 for receiving both a radio wave of a parent station and a go-around radio wave of a relay station, a subsidiary reception antenna 2 for receiving the go-around radio wave of the relay station, a... | 05/03/2005 |
| 6842426 | Fault detection for subscriber loop repeaters Systems and methods are described for fault detection for subscriber loop repeaters. A method includes monitoring an upstream signal on a digital subscriber loop for a fault detection signal that is added to said upstream signal at a repeater; and determining if a f... | 01/11/2005 |
| 6798878 | Local loop telecommunication repeater housing having mounting slots enabling replaceable repeater and voltage protector assemblies A design for passively cooled telecommunication repeater housings for use in wire transmission in the local loop outside plant provides mounting slots for repeaters and voltage protector assemblies disposed and arranged such that a repeater and its voltage protector... | 09/28/2004 |
| 6788783 | Digital loop carrier system with enhanced call handling and method When receiving a request from a telecommunications switch (106) for a telephone call to a party, a loop carrier (108) checks for errors and availability in the distribution resources that couple the called party to the digital loop carrier (108)... | 09/07/2004 |
| 6628638 | Method and apparatus for receiving diversity signals for use in OFDM radio communication system A diversity receiving apparatus for use in an OFDM transmission radio communication/broadcasting system where OFDM signals are received by a plurality of antennas and input into a plurality of receivers. The OFDM received signals are further transformed i... | 09/30/2003 |
| 6535603 | Local loop telecommunication repeater housings employing thermal collection, transfer and distribution via solid thermal conduction An improved thermal design for passively cooled telecommunication repeater housings for use with wire transmission in the local loop outside plant is achieved by replacing the known convection based heat transfer designs with a design based on solid therm... | 03/18/2003 |
| 6510223 | Local loop telecommunication repeater housings employing thermal collection, transfer and distribution via solid thermal conduction An improved service access and heat transfer design for passively cooled telecommunication repeater housings for use with wire transmission in the local loop outside plant is achieved by a cover, sealable to the housing's sidewall, removable to provide fi... | 01/21/2003 |
| 6415269 | Interactive remote auction bidding system An interactive remote auction bidding system for conducting an auction among participants located at remote locations from the auction site utilizes a data input device for communication over a network to the auction site. The system includes a data proce... | 07/02/2002 |
| 6292556 | Local loop telecommunication repeater housings employing thermal collection, transfer and distribution via solid thermal conduction An improved thermal design for passively cooled telecommunication repeater housings for use with wire transmission in the local loop outside plant is achieved by replacing the known convection based heat transfer designs with a design based on solid therm... | 09/18/2001 |
| 6289097 | Method and system for a redirect repeater providing network access A method and device for providing telephone subscribers serviced from digital loop carrier ("DLC") systems access to a computer network. The described device includes a redirect repeater with the capability to redirect multiplexed channels of the DLC to a... | 09/11/2001 |
| 6195531 | Method and system for automatic configuration of fixed cellular terminals A method and system enables a fixed cellular terminal (FCT) to be automatically configured to accommodate landline phones of the country and/or landline network in which it is physically located. The FCT includes a memory and a data structure therein. The... | 02/27/2001 |
| 6188763 | Signal processing unit for network interface unit An improved, more intelligent network interface unit capable of processing signals received from a high speed transmission media and outputting the received signals without substantial amplification or reduction. The network interface unit comprises a reg... | 02/13/2001 |
| 6044147 | Telecommunications system An apparatus for improving signal quality in a communications link includes apparatus for regenerating only the speech-like characteristics of signals received over the communications link so that an estimate of the original speech signal can be retransmi... | 03/28/2000 |
| 5875210 | Method and apparatus for repeating data A physical layer (PHY) device which can operate as a conventional PHY or as a repeater in a communication system. The PHY repeater supports four optional modes which may be enabled by programming control register bits with a microcontroller. These optiona... | 02/23/1999 |
| 5819104 | Disk array memory system having bus repeater at disk backplane A disk array memory system includes a disk subsystem, a disk director module and a cable connected between the disk subsystem and the disk director module. The disk subsystem includes a disk drive backplane having disk drive connectors interconnected by a... | 10/06/1998 |
| 5802164 | Systems and methods for controlling telephone sound enhancement on a per call basis In a communications system containing signal enhancement circuitry capable of selectively enhancing portions of a plurality of signals carried on a corresponding plurality of channels through the signal enhancement circuitry, a system and method for contr... | 09/01/1998 |
| 5796585 | Electronic equipment mounting device To provide an electronic equipment mounting device having flexibility in the mounting direction, the device is provided with a mounting jig on which a plurality of tongues are formed and a housing whose flat faces having different areas have slits in them... | 08/18/1998 |
| 5594785 | Method of producing ring-back tone in order wire In an order wire as an auxiliary line for use in the installation and maintenance of communication equipment, a method of producing a ring-back tone includes of transmitting a DTMF signal on the side of the calling station, causing a call-in tone to be pr... | 01/14/1997 |
| 5592507 | Intermediate relay station of a digital microwave communication system using service channel for monitoring and controlling space and/or time diversity, heterodyne relay, phase control, frequency control, with phase shift keying modulation A microwave digital communication system PSK-modulates a microwave carrier by using a main signal and, further, frequency-modulates it by using a service channel (SC) signal for monitoring and controlling the system. An intermediate relay station employin... | 01/07/1997 |
| 5422929 | Telephone line repeater and method of testing same A telephone line repeater (28) includes a pattern decoder/recognizer (100) which recognizes, inter alia, an input interrogating signal transmitted on a telephone network (20). The interrogating signal includes an address field (302) having at least one su... | 06/06/1995 |
| 5412716 | System for efficiently powering repeaters in small diameter cables A system of impedance matching is provided to match the total impedance of the cable system to the total impedance of the powered elements such as the repeaters. The source impedance of the power supplies may be considered as part of the cable impedance. ... | 05/02/1995 |
| 5410594 | Transmission input/output device with reduced power consumption A transmission input/output device for signal transmission through a telephone line, with reduced power consumption, size, and cost. The device includes: a resistor, connected to the telephone line, for setting a signal input and output impedance; and a t... | 04/25/1995 |
| 5386470 | Repeaters for secure local area networks A multiport repeater for a local area network installation has (in addition to its conventional functions) means for storing access rules for the items of equipment connected to it. It reads a portion of each frame, which may be all or part of the destina... | 01/31/1995 |
| 5365590 | System for providing access to digitally encoded communications in a distributed switching network A distributed switching network (switch) routes audio and control signals throughout the switch from various audio sources to one or more audio destinations. Audio sources such as mobile/portable radio units (via RF repeater transmitters), dispatch consol... | 11/15/1994 |
| 5347565 | Order wire device having function for reducing noise in communication system having a plurality of order wire devices An order wire device in a communication system having a plurality of order wire devices, signals output from each of the order wire devices being serially transmitted to remaining order wire devices, each of the order wire devices being capable of simulta... | 09/13/1994 |
| 5202919 | Metallic channel unit network A metallic channel unit network for interconnecting a two-wire, bidirectional signal transmitting means and a four-wire signal transmitting means in a communication system includes a voice hybrid driver, A/D signal processing circuit, D/A signal processin... | 04/13/1993 |
| 5195132 | Telephone network speech signal enhancement The quality of voice signals transmitted by a telephone station set, or similar device, are enhanced in accordance with the steps of the instant method before such signals are delivered to a receiving telephone station set by restoring the level of speech... | 03/16/1993 |
| 5086462 | Terminal repeater having a function for repeating DC loop signal A terminal repeater placed in at least one communication line connecting an exchange and at least one terminal device, comprising a DC cut-off circuit providing continuous paths for AC signals flowing through the lines while providing discontinuous paths ... | 02/04/1992 |
| 5038140 | Supervisory system in communication system In a communication system wherein repeater stations and terminal stations are connected in tandem, a supervisory system in which a logical hierarchical configuration is used for the transmission of supervisory information regarding the stations and a redu... | 08/06/1991 |
| 4966562 | Single slot repeater mounting A mounting for a digital service line repeater comprises a housing having a base and a removable cover, electrical components for electrically connecting the line repeater to signal wires, and a fastening device for removably attaching the base of another... | 10/30/1990 |
| 4882749 | Control of signal transmission Circuits embodying the invention include apparatus for sensing the amplitude and the frequency of the signals received from one section of a telephone cable and for propagating onto the succeeding section of telephone cable only those received signals hav... | 11/21/1989 |
